Alligations and Mixtures

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When charle visited a chocolate factory, he stole from tin-can some chocolate milk shake that had a 75% concentration of chocolate , He replaced this amount with a cheaper brand of milk shake that had only 25% chocolate concentration .Later during...
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If 20 men or 24 women or 40 boys can do a job in 12 days working for 8 hours a day, how many men working with 6 women and 2 boys take to do a job four times as big working for 5 hours a day for 12 days?

A. 8 men

B. 12 men

C. 2 men

D. 24 men

ishita
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A 20 lts vessel is filled with alcohol. Some of the alcohol is poured out into another vessel of equal capacity, which is then completely filled by adding water. The mixture thus obtained is then poured into the first vessel to capacity.Then 20/3 lts is poured from the first vessel into the second. Both vessels now contain an equal amt of alcohol. How much alcohol was originally poured from the first vessel into the second? ( CAT 2009)


plz provide the detailed solution
9 lts
10 lts
12 lts
12.5 lts
NMIMS Mumbai
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When charle visited a chocolate factory, he stole from tin-can some chocolate milk shake that had a 75% concentration of chocolate , He replaced this amount with a cheaper brand of milk shake that had only 25% chocolate concentration .Later during their routine quality analysis , the authorities realisied that the tin-can in the question had only 40% chocolate concentration . what percentage of chocolate milk shake did charle steal from the tin-can ?

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